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Transparent conducting film, preparation method and application of transparent conducting film

A technology of transparent conductive film and conductive mesh, which is used in equipment for manufacturing conductive/semiconductor layers, cable/conductor manufacturing, conductive layers on insulating carriers, etc. It can solve the problem that ITO transparent conductive films are difficult to produce in large areas. Application, high production cost, low light transmittance and other problems, to achieve the effect of good visible light transmittance, low production cost and simple preparation process

Inactive Publication Date: 2017-02-22
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

ITO transparent conductive film has excellent light transmittance and conductivity, so ITO transparent conductive film has been dominating the market of transparent conductive film; but the flexural resistance of ITO transparent conductive film is relatively poor, and the production cost is high, so ITO transparent conductive film Conductive thin films are difficult to achieve large-area production applications
In recent years, various research institutions are developing transparent conductive films that replace ITO materials. However, compared with ITO transparent conductive films, the developed ITO transparent conductive film substitutes have lower light transmittance, relatively higher surface resistance, and overall performance. poor

Method used

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  • Transparent conducting film, preparation method and application of transparent conducting film

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preparation example Construction

[0022] Specifically, the preparation method of the transparent conductive film may include the following steps:

[0023] Step A, uniformly mixing the silver nitrate and the first reaction solution into a homogeneous mixed solution, thereby obtaining a spinning dope. Specifically, the first reaction liquid is at least one of polyacrylonitrile or polyacrylonitrile copolymer; in the spinning dope, the mass fraction of silver nitrate is 1-10%, and the mass fraction of the polymer is 10-30%, the rest is solvent.

[0024] In step B, the spinning dope obtained in step A is used for electrostatic spinning, and the transparent conductive film substrate is used for receiving, so as to prepare a nanofiber grid on the transparent conductive film substrate. Specifically, the spinning dope prepared in step A is added to the syringe pump of the existing electrospinning machine, and the transparent conductive film substrate is installed on the receiving device of the existing electrospinning mach...

Embodiment 1

[0030] A transparent conductive film, and its preparation method may include the following steps:

[0031] Step A1. Dissolve polyacrylonitrile in dimethylformamide to prepare a 20% polyacrylonitrile solution, and then mix the 20% polyacrylonitrile solution with silver nitrate uniformly at room temperature. Thus, a spinning dope with a mass fraction of silver nitrate of 5% is obtained. The spinning dope is allowed to stand for a period of time to defoam for subsequent electrospinning.

[0032] Step B1. Install the aluminum foil on the roller receiving device of the existing electrospinning machine (roller receiving device is one of the rotary receiving devices), and fix the flexible transparent PET sheet for receiving on the aluminum foil (The flexible transparent PET sheet is the base of the transparent conductive film), the rotating speed of the roller receiver is 300r / min. Then add the spinning dope prepared in step A1 to the syringe pump of the existing electrospinning machine...

Embodiment 2

[0036] A transparent conductive film, and its preparation method may include the following steps:

[0037] Step A2. Dissolve polyacrylonitrile in dimethylformamide to prepare a 15% polyacrylonitrile solution, and then mix the 15% polyacrylonitrile solution with silver nitrate uniformly at room temperature. Thus, a spinning dope with a mass fraction of silver nitrate of 2% is obtained. The spinning dope is allowed to stand for a period of time to defoam for subsequent electrospinning.

[0038] Step B2. Install the aluminum foil on the roller receiving device of the existing electrospinning machine (the roller receiving device is one of the rotary receiving devices), and fix the flexible transparent PET sheet for receiving on the aluminum foil (The flexible transparent PET sheet is the base of the transparent conductive film), and the rotating speed of the roller receiving device is 1000 r / min. Then add the spinning dope prepared in step A2 to the syringe pump of the existing elect...

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Abstract

The invention discloses a transparent conducting film, a preparation method and application of the transparent conducting film. A conductive grid which is composed of nanometer silver threads in the diameter of 100-500nm is arranged as a metal layer of the transparent conducting film. The thickness of the metal layer is 400nm-1 micrometer. The preparation method for the transparent conducting film comprises the following steps: by taking a homogeneous phase mixed solution of silver nitrate and polyacrylonitrile and / or polyacrylonitrile copolymer as a spinning solution, carrying out electrostatic spinning; receiving by adopting a base of the transparent conducting film; and carrying out in-situ reduction on the nanometer fiber grid on the base into the nanometer silver threads by utilizing silver mirror reaction, thereby acquiring the transparent conducting film. The transparent conducting film provided by the invention has the light transmittance and conductivity equivalent to those of an ITO transparent conducting film, adopts a simple preparation process, is low in production cost and has wide application prospect in the fields of touch panels, panel display, electromagnetic shielding, solar photovoltaic devices, automobile window heating, and the like.

Description

Technical field [0001] The invention relates to the field of conductive films, in particular to a transparent conductive film and a preparation method and application thereof. Background technique [0002] Transparent conductive film is a film with good conductivity and high light transmittance in the visible light wavelength range. It is mainly used in solar cells, displays, gas sensors, antistatic coatings, transparent electromagnetic wave shielding and other fields. Broad market prospects. [0003] At present, the most widely researched and applied are metal film systems and oxide film systems, such as tin-doped indium trioxide (ITO) transparent conductive films, aluminum-doped zinc oxide (AZO) transparent conductive films, etc. ITO transparent conductive film has excellent light transmittance and conductivity, so ITO transparent conductive film has always dominated the transparent conductive film market; but ITO transparent conductive film has relatively poor flex resistance a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/14H01B13/00
CPCH01B5/14H01B13/0026
Inventor 于建香武光明吕晓慧
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY